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OpenStudy (anonymous):
write this quadratic equation in standard form. then use the quadratic formula to find the solutions. x squared +4x-5=0. please show work:)
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jhonyy9 (jhonyy9):
x^2 +4x -5=0 D=16+20=36 x_1,2=(-4+/- sqrt36)/2 = (-4+/- 6)/2 = 2(-2+/- 3)/2 = -2+/-3 = -5 and 1
jhonyy9 (jhonyy9):
x^2 +4x -5=(x+5)(x-1)
jhonyy9 (jhonyy9):
ok ?
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